STUDY OF COST/BENEFIT TRADEOFFS AVAILABLE IN HELICOPTER NOISE TECHNOLOGY APPLICATIONS

This study investigated cost/benefit tradeoffs using the case histories of four helicopters for which design and development were complete, and in three cases, have undergone substantial flight testing. The approach to quieting each helicopter was an incremental reduction of each source as required to obtain reductions in flyover noise with modifications to other secondary systems only as necessary. The methodology used to predict the effects of the design modifications on acquisition, maintenance, and operating costs were typical of those employed by rotorcraft manufacturers. The reduction of helicopter flyover noise generally was achieved through reductions in rotor tip speed. Performance characteristics were maintained to specified minimums for each aircraft in the study. (Author)

• Corporate Authors:

  Boeing Vertol Company

  Philadelphia, PA  United States 

  Federal Aviation Administration

  William J. Hughes Technical Center, Airport Technology Research and Development Branch
  Atlantic City International Airport
  Atlantic City, NJ  United States  08405
• Authors:
  • Spencer, R H
  • Sternfeld, H J
• Publication Date: 1980-1

Media Info

• Pagination: 128 p.

Subject/Index Terms

• TRT Terms: Aircraft; Alternatives analysis; Analysis; Benefits; Case studies; Costs; Flight tests; Forecasting; Helicopters; Maintenance; Noise; Noise control; Operations; Property acquisition
• Uncontrolled Terms: Acquisition; Cost analysis; Experimental design; Modifications; Noise reduction
• Old TRIS Terms: Noise sound
• Subject Areas: Administration and Management; Aviation; Environment; Finance; Maintenance and Preservation; Vehicles and Equipment;

Filing Info

• Accession Number: 00314038
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FAA/EE-80-5
• Contract Numbers: DOT-FA78WA-4161
• Files: NTIS, USDOT
• Created Date: Aug 5 2002 12:00AM